Improved slide foe extension-tables



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IMPROVBD SLIDE FOR EXTENSION-TABLES.

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TO ALL WHOM IT MAY CONCERN: l,

Be it known that I, H. OLDS, of Syracuse, in-thc county of Onondaga, andState of New York, have invented a new and useful improvement in a Slidefor Extension-Tables; andIdo herebydeclarcthat the following is a full,clear, and exact description thereof, which, will enable others skilledin the art to makciand usc the same, rcfcrcnce'being had to theaccompanying drawings, forming partiof'thisspecification.

Figure 1 is a side view of the slide-bars with my improved slidesattached;

Figure 2 is a cross-section of the same taken through the line :z: iig.I.

Similar letters of reference indicate corresponding parts.

My invention has for its object to furnish an improved slide forextension-tables, simple in' construction,

easily applied, and effective in operation; and it consists in thecross-shaped slide, the wings of which are at right angles to eachother; in the combination of the cross-shaped slides with groovesinclining at right angles with cach other from the same opening in thefaces of the slide-bars; and in thecomhination of astop-bolt, coiledspring, and inclined groove or grooves with the faces of the adjacentbars; therwhole being constructed -and arranged as hereinafter morefully described.

A are the slides, which are made in the form of a cross in theircrosssection, the wings of which are at right angles to each other, andwhich maybe made o anydesiied length or breadth. The slides A are placedin grooves formed iu the contiguous-faces of the slide-bars B. The saidgrooves, starting from the same opening' in theicentre of the faces ofthe said bars, separate or incline from each other, so that their planesmay be at right vangles to each other, as shown in fig. 2. The slidesare placed in the opposite ends of the adjacent bars, and are secured inplace by theetay-pins or screws C, which pass through the wings of theslides A, as shown in tig. 2, so asto hold the said slides securely inplace. One or more stay-pins or screws C may be used with each slide, asmay be desired.V `This construction of thcislides Aand of the grooves inthe bars B greatly simplifies and cheapens the construction ot' the saidslides and liars, as the grooves can be sawn in thcisaid-bars,

vallowing each bar to be made in onepiece. The labor of iini'shing'theslides is also very much diminished,

while, at the same time, the slides thus constructed are very eiectiv'eand easily'operated. vD is a stop-bolt placed in a cavity or'hole formedin the face of one of the slide-bars B, near its end, and which ispressed ont by the elasticity of the coiled spring E placed in thebottom of said cavity or hole. F are inclined grooves,

`formed in the face of the oth'er bar B, the ends of which grooves thatare towi'ards the ends ofthe bar are deepest,Y

and terminate in a square shoulder or stop.4 The inner or shallowcrparts of thei'said grooves may be continued till theymeet each other, ifdesired, so as to form a continuous groove. This spring-stop bolt andinclined groove or grooves hold the sliding-hars locked, so that theycan neither be pushed'too far in nor drawn too far out. The bars B maybe unlocked by means of the key G, which may be connected to the side ofone of the hars by a chain or elastic cord, H, and which, when not inuse, may be placed inthe-keepers I attached to the side of the said bar.

lBy passing the key G into a small hole in the side of the bar,and-prcssingit against the end ofthe stop-bolt D, the said bolt may beforced into the cavity in which it is placed so as to allow the bars Bto be drawn apart.

I claim as new, and desire to secure by Letters Patent-f 1. lThecombination of the stay-pins C, the cross-shaped .slides A, andslide-barsB, substantially as and for thepurpose speci'ed.` i i 2. Thecombination of the stop-bolt D, coiled spring E, and inclined groove orgrooves F, with the slidingbars B, substantially as herein shown anddescribed, Aand for the purpose set forth. i

,3. The combination of the key Gwith the stopvbolt D, coiled spring E,and groove F, substantially as herein shown and described, and for thepurpose set forth.

' H. OLDS.

Witnesses:

A. T. KNAPP, J. W. TEFFT.

